Use the method of variation of parameters to find the general solution of the following ODE. Note that while it is often

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Use the method of variation of parameters to find the generalsolution of the following ODE. Notethat while it is often hard to solve the n×n system of equationswhen n > 2, the system of equationssimplifies in this case, because y1 = 1 and y2 = t are fundamentalsolutions of the correspondinghomogeneous equation.y′′′ −y′′ = t